Thanks guys.
The signals don't do anything when I move the stalk either way they just remain solidly on.
I seem to remember when just one side was stuck that the other did still flash until that broke too! The hazard button however just made them both stick on not flashing. Now they are both on permanently.
Haven't checked the trunk for water yet and can't remember if the central locking flashes still. We've 70mph winds and heavy rain booked for today (for a change this winter!) so I'll brave the elements after work and report back.
Thanks everyone for your input so far.